Update 052_slices.zig

exercises/052_slices.zig

@@ -24,7 +24,7 @@
 // first item at x and the last item at y-1. You can leave the y
 // off to get "the rest of the items".
 //
-// Notice that the type of a slice on an array of u8 items is []u8.
+// The type of a slice on an array of u8 items is []u8.
 //
 const std = @import("std");